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Topic Area: Modeling
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Displaying records 31 to 40 of 138 records.
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31. Combining Genetic Algorithms & Simulation to Search for Failure Scenarios in System Models
Topic: Modeling
Published: 10/28/2013
Authors: Kevin L Mills, Christopher E Dabrowski, James J Filliben, Sanford P Ressler
Abstract: Large infrastructures, such as clouds, can exhibit substantial outages, sometimes due to failure scenarios that were not considered during system design. We define a method that uses a genetic algorithm (GA) to search system simulations for parameter ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914164

32. Comment on "Frustrated Magnetization in Co Nanowires: Competition Between Crystal Anisotropy and Demagnetization Energy"
Topic: Modeling
Published: 9/15/2010
Authors: Kristof M. Lebecki, Michael J Donahue
Abstract: Bergmann et al. [Phys. Rev. B 77, 054414 (2008)] present an analytical theory explaining the behavior of ferromagnetic cobalt nanowires with perpendicular anisotropy. This theory, which predicts a sinusoidal variation of the magnetization along the l ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904979

33. Comparative Statistical Analysis of Test Parts Manufactured in Production Environments
Report Number: 6868
Topic: Modeling
Published: 6/1/2002
Authors: David E. Gilsinn, Alice V. Ling
Abstract: Estimating error uncertainties arising in parts produced on machine tools in production machine shops is not a well understood process. The current study details a process of estimating these error uncertainties. A part with significant features was ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150852

34. Comparative Statistical Analysis of Test Parts Manufactured in Production Environments
Series: NIST Interagency/Internal Report (NISTIR)
Topic: Modeling
Published: 2/2/2004
Authors: David E. Gilsinn, Alice V. Ling
Abstract: Estimating error uncertainties arising in production parts isnot a well understood process. This study developed an approach to estimatethese uncertainties. Machine tool error components on a vertical turningcenter were measured. Multiple parts were ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150867

35. Comparing VM-Placement Algorithms for On-Demand Clouds
Topic: Modeling
Published: 11/29/2011
Authors: Kevin L Mills, James J Filliben, Christopher E Dabrowski
Abstract: Much recent research has been devoted to investigating algorithms for allocating virtual machines (VMs) to physical machines (PMs) in infrastructure clouds. Many such algorithms address distinct problems, such as initial placement, consolidation, or ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909220

36. Computable Error Bounds for Approximate Periodic Solutions of Autonomous Delay Differential Equations
Topic: Modeling
Published: 1/2/2007
Author: David E. Gilsinn
Abstract: In this paper we prove a result that says: Given an approximate solution and frequency to a periodic solution of an autonomous delay differential equation that satisfies a certain non-criticality condition, there is an exact periodic solution and fre ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50868

37. Conformance of Image Features to Classifier Assumptions
Topic: Modeling
Published: 7/27/2012
Authors: Julien Marc Amelot, Peter Bajcsy, Mary C Brady
Abstract: Cell measurements are derived frequently from the results of pixel classification and contiguous region segmentation of microscopy images. Image segmentation is accomplished by classifying image pixels based on high dimensional image features com ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911691

38. Constructing Sequence Alignments from a Markov Decision Model with Estimated Parameter Values
Topic: Modeling
Published: 1/1/2004
Authors: Fern Y Hunt, Anthony J Kearsley, Agnes (Abbie) O'Gallagher
Abstract: Current methods for aligning biological sequences are based on dynamic programming algorithms. If large numbers of sequences or a number of long ones are to be aligned the required computations are expensive in memory and CPU time. In an attempt to b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51306

39. Constructing Sequence Alignments from a Markov Decision Model with Estimated Parameter Values
Topic: Modeling
Published: 1/1/2004
Authors: Fern Y Hunt, Anthony J Kearsley, Agnes (Abbie) O'Gallagher
Abstract: Current methods for aligning biological sequences are based on dynamic programming algorithms. If large numbers of sequences or a number of long ones are to be aligned the required computations are expensive in memory and CPU time. In an attempt to b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51308

40. Constructing Sibson Elements for a Rectangular Mesh
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6718
Topic: Modeling
Published: 2/1/2001
Author: David E. Gilsinn
Abstract: This paper documents the construction of a finite element, called the Sibson element. The shape function of this element is formed on rectangular grids by C^u1^ splines defined on a triangulation of each subrectangle by dividing it into four subtri ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150813



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